Hot isostatic pressing heat treatment of bars made of titanium aluminide alloy for low-pressure turbine blades of turbines

Disclosed is a method for heat treatment of at least one bar made of a titanium aluminide alloy for manufacturing at least one low-pressure turbine blade of a turbomachine, comprising hot isostatic pressing of the bar, characterised in that, after the hot isostatic pressing (121), a step is followed by the following: after a temperature transition phase, the at least one low-pressure turbine blade of the turbomachine is subjected to a heat treatment in which the at least one low-pressure turbine blade of the turbomachine is subjected to a heat treatment in which the at least one low-pressure turbine blade of the turbomachine is subjected to a heat treatment; the bar is heat treated (122) at a temperature close to the eutectoid temperature of the alloy suitable for forming a layered alloy microstructure of single-phase grains [gamma] having a volume fraction of at least 90% and layered grains [alpha] having a volume fraction of at most 10%, followed by a controlled cooling step (123). 公开了一种由铝化钛合金制成的至少一个棒材的热处理方